Treadle mechanism for shears.



I JOHN J. KUTSC HElD & JOSEPH]. KUTSCHEID.

TREADLE MECHANISM FOR SHEARS.

APPLICATION FILED ll \N. 24, 1914.

Patented July 13, 1915 COLUMBIA PLANpuRAPl-I co., WASHINLfiON. D. c.

i TED TATE PATENT QFFTCE.

JOHN J. KUTSCHEIID AND JOSEPH J. KUTSCHEID, OF CHICAGO, ILLINOIS.

TREADLE MECHANISM FOR SI-IEARS.

Application filed January 24, 1914.

To all whom it may concern Be it known that we, JOHN J. Korsorinin and JOSEPH J. Kn'rsonnm, citizens of the United States, and residents of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Treadle Mechanism for Shears, of which the following is a specification.

Our invention relates to metal shears and has for its object. the production of a machine of this character which will be of improved construction and efficient in operation.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawing forming a part of this specification, and in which Figure 1 is a vertical transverse section of a metal shears embodying our invention, Fig. 2 is a top plan view of the treadle of the machine detached, Fig. 8 is a fragmentary sectional. detail illustrating the connection of the treadle with the bar which connects with the relatively movable blade of the device, and Fig. 4 is an enlarged de tail section taken on substantially line of Fig. 2.

The preferred form of construction as illustrated in the drawing comprises a sup porting frame consisting of four legs 1 which preferably diverge toward their lower ends as shown. The upper ends of the legs 1 at the same side of the machine are rigidly connected to a channel frame 2. Biga construction possessing great firmness and rigidity. In order to permit of the seating of the plate 4: in the upper side of body 3 as mentioned the upper edge of the latter is countersunk or stepped and the periphery of said plate is correspondingly formed, as clearly shown in Fig. 1.

Arranged adjacent the rearward longitudinal edge of the bed plate 41 is the relatively Specification of Letters Patent.

Patented July 13, 1915.

Serial No. 814,137.

stationary blade of the device which is secured to the rearward wall or portion of the body 3 by means of bolts 6. The bolts 6 pass through vertically extending elongated slots provided in said portion of the body 3 so as to permit of slight vertical adjustment of blade 5 as will be readily understood. Said blade is held in positions of adjustment by means of screws 7 which are threaded in a reinforcing T-bar 8 rigidly secured as by riveting t0 the under side of body 3 at the rearward edge thereof. The screws 7 engage against the under edge of blade 5, and serve to support the same, limiting downward movement thereof as is apparent.

Arranged in operative proximity with the blade 5 is a relatively movable blade 9 which is detachably secured to an elongated transversely extending carrier or holder 10 the ends of which are slidably mounted in vertically extending channels 11 provided at the inner sides of the frame members 2. A helical tension spring 12 cooperates with each end of the carrier 10 to normally hold which is rockingly or pivot-ally mounted upon a bar 15 which is supported at its ends in the legs 1 at the rearward side of the machine. Cooperating with the treadle frame ll are elongated truss bars 16 arranged in. pairs obliquely of said frame, the ends of bars 16 being secured to said frame at the corners thereof, one bar of each pair being arranged above the inwardly extending flange of frame 14 and the other below said iiange as clearly shown in Fig. l. The central portions of said bars at their points of intersection are spaced apart by means of a transversely or perpendicularly extend-- ing bolt 17 and nuts 18 threaded upon said bolt which engage against the inner sides of said bars as clearly shown in Fig. l. Said sort of truss is constituted connecting the diametrically opposite corners of the treadle frame. Through this arrangement it will be seen that pressure applied to any portion or to any point of the frame 1 will be equally distributed, so as to insure both bars 13 being correspondingly actuated and hence both ends of blade carrier 10 correspondingly moved. In other words the provision of the truss bars 16 renders the frame 14: so rigid as to obviate the possibility of sagging of any corner or of warning of said frame. With this arrangement in the event of pressure being applied to the free edge of frame 14 at one end thereof, this pressure will be transmitted through the adjacent bars 16 to the opposite side of said frame in order to equalize or uniformly distribute said pressure and so that just as effectual rocking of said treadle may be secured by engaging either end of the free edge thereof as the central part of said edge. Without the provision of the bars 16, in the event of pressure being applied to the forward bar of the frame 14 adjacent one end thereof, this end would be moved downwardly a greater distance than the opposite side, which would lag behind, the result being that the bars 13 would not be moved uniformly and thereby effect binding of the blade carrier 10 in guides 11.

Through the counter-sunk arrangement of bed plate 4 as shown and described a bed possessing great strength and rigidity is effected, the sides of the bed body 3 by reason of this arrangement serving to engage with the periphery of said plate so as to relieve the strain upon the securing bolts or other fastenings of said plate. Also, with this arrangement, said plate serves to reinforce the walls of said bed body, especially the rear wall thereof carrying the blade 5, any outward pressure to which said wall is subjected, when the machine is in use, being transferred through the plate 4 to the outer wall of said bed body as will be readily understood.

W'hile we have illustrated and described the preferrecv form of construction for carrying our invention into effect, this is capable of variation and modification without departing from the spirit of the invention. We, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail ourselves of such variations and modifications as come within the scope of the appended claims.

Having described our invention what we claim as new and desire to secure by Letters Patent is:

1. In mechanism of the class described, the combination of a movable member; a treadle for operating said movable member, said treadle comprising a rockingly mounted substantially rectangular peripheral frame; a connection between said frame and said member whereby, upon rocking of said frame, said member will be actuated; and a pair of obliquely disposed reinforcing bars connected with said frame at the corners of the latter, the central portions of said being spaced apart at a distance greater than the ends of said bars, substantially as described.

1n mechanism of the class described, the combination of a movable member; a treadle for operating said movable member, said treadle comprising a rockingly mounted substantially rectangular peripheral frame; a connection between said frame and said movable member whereby, upon rocking of said frame, said member will be actuated; pairs of obliquely disposed reinforcing bars connected with said frame at opposite sides at the corners thereof; and adjustable means at the central portions of said bars spacing said central bar portions apart a distance greater than the ends of said bars, substantially as described.

3. In mechanism of the class described, the combination of a movable member; a treadle for operating said movable member, said treadle comprising a rockingly mounted substantially rectangular peripheral frame; a connection between said frame and said member whereby, upon rocking of said frame, said member will be actuated; pairs of obliquely disposed reinforcing bars connected. with said frame at opposite sides at the corners thereof; and a transversely extending bolt and nuts threaded on said bolt arranged at the central portions of said bars for spacing said central portions apart a distance greater than the ends of said bars, substantially as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

JOHN J. KUTSCHEID. JOSEPH J. KUTSCHEID.

V'Vitnesses:

ARTHUR A. OLSON, JosiruA R. H. Por'rs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner oi Patents, Washington, D. C. 

